公开(公告)号：US11511228B2

公开(公告)日：2022-11-29

申请号：US17309151

申请日：2019-10-24

Applicant: BASF Corporation

Inventor： Stefan Maurer ,  Jia Di Zhang ,  Yu Dai ,  Yu Fen Hao ,  Ming Ming Wei ,  Teng Shen

IPC: B01D53/94 ,  B01J23/40 ,  B01J29/76 ,  B01J35/00 ,  B01J35/04 ,  B01J35/10 ,  B01J37/02 ,  F01N3/10 ,  F01N3/20 ,  F01N3/28

Abstract: The present invention relates generally to the field of exhaust treatment systems for purifying exhaust gas discharged from a lean burn engine. The exhaust treatment system comprises a Diesel Oxidation Catalyst (DOC), a Catalyzed Soot Filter (CSF), a reductant injector, an AEI zeolite based Selective Catalyzed Reduction (SCR) catalyst and an Ammonia Oxidation Catalyst (AMOX) downstream to the AEI zeolite based SCR catalyst.

公开(公告)号：US20240226862A9

公开(公告)日：2024-07-11

申请号：US18277908

申请日：2022-02-18

Applicant: BASF CORPORATION

Inventor： Jia Di Zhang ,  Wen-Mei Xue ,  Xiaofan Yang ,  Weiyong Tang ,  Burcu Bayram ,  Yu Fen Hao

IPC: B01J29/76 ,  B01D53/94 ,  B01J23/42 ,  B01J29/90 ,  B01J35/57 ,  B01J35/61 ,  B01J35/77 ,  B01J37/00 ,  B01J37/02 ,  B01J38/12 ,  F01N3/20 ,  F01N3/28

CPC classification number: B01J29/763 ,  B01D53/9418 ,  B01D53/944 ,  B01J23/42 ,  B01J29/90 ,  B01J35/57 ,  B01J35/612 ,  B01J35/77 ,  B01J37/0036 ,  B01J37/0215 ,  B01J38/12 ,  F01N3/2066 ,  F01N3/2803 ,  B01D2255/1021 ,  B01D2255/20761 ,  B01D2255/50 ,  B01D2255/9155 ,  B01D2257/404 ,  B01D2258/012 ,  B01J2229/186 ,  F01N2370/04

Abstract: The present invention relates to a SCR catalytic article, comprising —a substrate and —a copper-containing small pore zeolite, having a crystal structure characterized by a decrease of unit cell volume upon sulfurization and desulfurization of less than Å3 as determined by an X-ray powder diffraction, wherein the sulfurization and desulfurization are carried out in accordance with the processes as described in the specification, and to an exhaust treatment system comprising the same. The present invention also relates to a method for determining whether a metal-promoted small pore zeolite is resistant to irreversible sulfur poisoning and a method for evaluating whether a metal-promoted small pore zeolite is qualified for resistance to irreversible sulfur poisoning.

公开(公告)号：US20240131498A1

公开(公告)日：2024-04-25

申请号：US18277908

申请日：2022-02-18

Applicant: BASF CORPORATION

Inventor： Jia Di Zhang ,  Wen-Mei Xue ,  Xiaofan Yang ,  Weiyong Tang ,  Burcu Bayram ,  Yu Fen Hao

IPC: B01J29/76 ,  B01D53/94 ,  B01J23/42 ,  B01J29/90 ,  B01J35/57 ,  B01J35/61 ,  B01J35/77 ,  B01J37/00 ,  B01J37/02 ,  B01J38/12 ,  F01N3/20 ,  F01N3/28

CPC classification number: B01J29/763 ,  B01D53/9418 ,  B01D53/944 ,  B01J23/42 ,  B01J29/90 ,  B01J35/57 ,  B01J35/612 ,  B01J35/77 ,  B01J37/0036 ,  B01J37/0215 ,  B01J38/12 ,  F01N3/2066 ,  F01N3/2803 ,  B01D2255/1021 ,  B01D2255/20761 ,  B01D2255/50 ,  B01D2255/9155 ,  B01D2257/404 ,  B01D2258/012 ,  B01J2229/186 ,  F01N2370/04

Abstract: The present invention relates to a SCR catalytic article, comprising —a substrate and —a copper-containing small pore zeolite, having a crystal structure characterized by a decrease of unit cell volume upon sulfurization and desulfurization of less than Å3 as determined by an X-ray powder diffraction, wherein the sulfurization and desulfurization are carried out in accordance with the processes as described in the specification, and to an exhaust treatment system comprising the same. The present invention also relates to a method for determining whether a metal-promoted small pore zeolite is resistant to irreversible sulfur poisoning and a method for evaluating whether a metal-promoted small pore zeolite is qualified for resistance to irreversible sulfur poisoning.